JavaScript Tutorial in Hindi for Beginners [Part 40] - How to select element by class in JavaScript

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#Javascript #Tutorial #Hindi

In this video i will talk about how to select an element by class in JavaScript

To select elements by a given class name, you use the getElementsByClassName() method:

The getElementsByClassName() method returns a collection of elements whose class name is the CSS class that you pass into the method. The return collection is a NodeList.

Once you selected an element, you can add styles to the element, manipulate its attributes, and traversing to parent and child elements.

Since the getElementsByClassName() is a method of the Element, you can select elements with a given class inside a container.

The HTMLCollection object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the HTMLCollection object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

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